11a^2-54a-5
I will assume you mean 11a^2 - 54a -5 = 0
Use quadratic formula with a = 11 b = -54 c = -5
\(A = {-b \pm \sqrt{b^2-4ac} \over 2a}\)
Or FACTOR it to (11a +1)(a-5)=0 to find that a = 5 or - 1/11
+37084 
